Patio Cover Patio Roof Beam Span Table

The tables below give maximum spans for rafters and beams.

Patio cover patio roof beam span table.

Choose the appropriate span table. Beam span table douglas fir elijahhome co garage door header size benjaminremodeling co roofing beam spans pitch roof span tables patio cover kits pre designed covers patio roof beam calculator. Rafter span tables use these tables to determine lengths sizes and spacing of rafters based on a variety of factors such as species load grade spacing and pitch. The smallest beams for patio covers are typically 4 by 6.

You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. Visit the roof framing page for more information on cutting roof rafters and visit the roof pitch calculator for determining rafter lengths based on rise and run. For free standing canopies of any height up to 3 2m use the span table marked below with an asterisk.

Monoslope empty under average roof height h patio height hc 3 h 4 4 h 5 5 h 6 5 hc 2 3 d a a 2 4 hc 2 8 f c a 2 8 hc 3 2 g e b monoslope blocked under. Jan 15 2017 a simple buying guide for beams and rafters that support patio roofs. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. Includes size and spacing tables for load bearing and links to related articles.

For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements.